Malware Analysis Report

2025-06-16 05:09

Sample ID 221223-bxdfwsff33
Target file.exe
SHA256 876aa06eb3062b728e3507fdf753bac180b9a1e57ff8ed46078367f9d41dd745
Tags
nymaim discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

876aa06eb3062b728e3507fdf753bac180b9a1e57ff8ed46078367f9d41dd745

Threat Level: Known bad

The file file.exe was found to be: Known bad.

Malicious Activity Summary

nymaim discovery trojan

NyMaim

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Checks installed software on the system

Drops file in Program Files directory

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-12-23 01:31

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-23 01:31

Reported

2022-12-23 01:33

Platform

win7-20220812-en

Max time kernel

58s

Max time network

59s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.exe"

Signatures

NyMaim

trojan nymaim

Checks installed software on the system

discovery

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Split Files\is-370F1.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-UOAEQ.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-HBLBO.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\is-B588A.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-RL4GA.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\is-809AH.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\is-HPB3V.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-BVP52.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-7OQ8F.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-2KTUN.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-G9F8A.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-1ETE4.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\is-PBGPT.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-LQ7RG.tmp C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1956 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp
PID 1956 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp
PID 1956 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp
PID 1956 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp
PID 1956 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp
PID 1956 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp
PID 1956 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp
PID 1756 wrote to memory of 1336 N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1756 wrote to memory of 1336 N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1756 wrote to memory of 1336 N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1756 wrote to memory of 1336 N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1756 wrote to memory of 1336 N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1756 wrote to memory of 1336 N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1756 wrote to memory of 1336 N/A C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1336 wrote to memory of 992 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe
PID 1336 wrote to memory of 992 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe
PID 1336 wrote to memory of 992 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe
PID 1336 wrote to memory of 992 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe
PID 1336 wrote to memory of 992 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe
PID 1336 wrote to memory of 992 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe
PID 1336 wrote to memory of 992 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe
PID 1336 wrote to memory of 1492 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1336 wrote to memory of 1492 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1336 wrote to memory of 1492 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1336 wrote to memory of 1492 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1336 wrote to memory of 1492 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1336 wrote to memory of 1492 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1336 wrote to memory of 1492 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1492 wrote to memory of 1980 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1492 wrote to memory of 1980 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1492 wrote to memory of 1980 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1492 wrote to memory of 1980 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1492 wrote to memory of 1980 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1492 wrote to memory of 1980 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1492 wrote to memory of 1980 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp

"C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp" /SL4 $60126 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1800857 133120

C:\Program Files (x86)\Split Files\SplitFiles117.exe

"C:\Program Files (x86)\Split Files\SplitFiles117.exe"

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles117.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles117.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles117.exe" /f

Network

Country Destination Domain Proto
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 107.182.129.235:80 107.182.129.235 tcp
N/A 171.22.30.106:80 171.22.30.106 tcp

Files

memory/1956-54-0x0000000075141000-0x0000000075143000-memory.dmp

memory/1956-55-0x0000000000400000-0x0000000000427000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

memory/1756-58-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

C:\Users\Admin\AppData\Local\Temp\is-EPN6R.tmp\is-5C2M6.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

\Users\Admin\AppData\Local\Temp\is-STGIE.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

\Users\Admin\AppData\Local\Temp\is-STGIE.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

\Users\Admin\AppData\Local\Temp\is-STGIE.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 71f25f23a8f8004fc0ad8b744eaed10d
SHA1 e6bbab1f671f7a8d6fbbe5eaf48681e349367611
SHA256 ec15ad327570e4fbe7871075765a25f9afff36d8763f2e4bd4c894c86b31e02b
SHA512 693d8a8a6c37aa07d134af2cd48d4c705b2c22211cea356c57365c503d051fa8eedc41919f82338c92959b94d9da08d16150c5a53a7ed8e9918f9dea07984e4e

memory/1336-66-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 71f25f23a8f8004fc0ad8b744eaed10d
SHA1 e6bbab1f671f7a8d6fbbe5eaf48681e349367611
SHA256 ec15ad327570e4fbe7871075765a25f9afff36d8763f2e4bd4c894c86b31e02b
SHA512 693d8a8a6c37aa07d134af2cd48d4c705b2c22211cea356c57365c503d051fa8eedc41919f82338c92959b94d9da08d16150c5a53a7ed8e9918f9dea07984e4e

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 71f25f23a8f8004fc0ad8b744eaed10d
SHA1 e6bbab1f671f7a8d6fbbe5eaf48681e349367611
SHA256 ec15ad327570e4fbe7871075765a25f9afff36d8763f2e4bd4c894c86b31e02b
SHA512 693d8a8a6c37aa07d134af2cd48d4c705b2c22211cea356c57365c503d051fa8eedc41919f82338c92959b94d9da08d16150c5a53a7ed8e9918f9dea07984e4e

memory/1956-69-0x0000000000400000-0x0000000000427000-memory.dmp

\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 71f25f23a8f8004fc0ad8b744eaed10d
SHA1 e6bbab1f671f7a8d6fbbe5eaf48681e349367611
SHA256 ec15ad327570e4fbe7871075765a25f9afff36d8763f2e4bd4c894c86b31e02b
SHA512 693d8a8a6c37aa07d134af2cd48d4c705b2c22211cea356c57365c503d051fa8eedc41919f82338c92959b94d9da08d16150c5a53a7ed8e9918f9dea07984e4e

\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 71f25f23a8f8004fc0ad8b744eaed10d
SHA1 e6bbab1f671f7a8d6fbbe5eaf48681e349367611
SHA256 ec15ad327570e4fbe7871075765a25f9afff36d8763f2e4bd4c894c86b31e02b
SHA512 693d8a8a6c37aa07d134af2cd48d4c705b2c22211cea356c57365c503d051fa8eedc41919f82338c92959b94d9da08d16150c5a53a7ed8e9918f9dea07984e4e

memory/1756-73-0x0000000003890000-0x00000000049F0000-memory.dmp

memory/1336-74-0x0000000000400000-0x0000000001560000-memory.dmp

memory/1336-75-0x0000000001AF0000-0x0000000002C50000-memory.dmp

memory/1336-76-0x0000000001AF0000-0x0000000002C50000-memory.dmp

memory/1336-77-0x0000000000400000-0x0000000001560000-memory.dmp

memory/1336-78-0x0000000000400000-0x0000000001560000-memory.dmp

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/992-80-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RYJEQxj4zl6OH8.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/1336-86-0x0000000010000000-0x000000001001B000-memory.dmp

memory/1756-90-0x0000000003890000-0x00000000049F0000-memory.dmp

memory/1336-91-0x0000000000400000-0x0000000001560000-memory.dmp

memory/1492-92-0x0000000000000000-mapping.dmp

memory/1980-94-0x0000000000000000-mapping.dmp

memory/1336-95-0x0000000000400000-0x0000000001560000-memory.dmp

memory/1956-97-0x0000000000400000-0x0000000000427000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-23 01:31

Reported

2022-12-23 01:33

Platform

win10v2004-20221111-en

Max time kernel

90s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.exe"

Signatures

NyMaim

trojan nymaim

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation C:\Program Files (x86)\Split Files\SplitFiles117.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A

Checks installed software on the system

discovery

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Split Files\language\is-V86PR.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-GEGTK.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\is-DIECI.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-EA37K.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-28HBJ.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\is-E3BEU.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\is-KLS3S.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-3DF5G.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-6NJF4.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-N13Q9.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\is-GNO12.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-T5P9T.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-IRVQP.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File created C:\Program Files (x86)\Split Files\is-GJUI4.tmp C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4300 wrote to memory of 4708 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp
PID 4300 wrote to memory of 4708 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp
PID 4300 wrote to memory of 4708 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp
PID 4708 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 4708 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 4708 wrote to memory of 3512 N/A C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 3512 wrote to memory of 448 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sCzewsN9TvyCgL.exe
PID 3512 wrote to memory of 448 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sCzewsN9TvyCgL.exe
PID 3512 wrote to memory of 448 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sCzewsN9TvyCgL.exe
PID 3512 wrote to memory of 4248 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 3512 wrote to memory of 4248 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 3512 wrote to memory of 4248 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 4248 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 4248 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 4248 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp

"C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp" /SL4 $801C4 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1800857 133120

C:\Program Files (x86)\Split Files\SplitFiles117.exe

"C:\Program Files (x86)\Split Files\SplitFiles117.exe"

C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sCzewsN9TvyCgL.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles117.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles117.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles117.exe" /f

Network

Country Destination Domain Proto
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 107.182.129.235:80 107.182.129.235 tcp
N/A 171.22.30.106:80 171.22.30.106 tcp
N/A 93.184.221.240:80 tcp
N/A 20.42.72.131:443 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 104.80.225.205:443 tcp

Files

memory/4300-132-0x0000000000400000-0x0000000000427000-memory.dmp

memory/4708-134-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

C:\Users\Admin\AppData\Local\Temp\is-VL036.tmp\is-A8BDC.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

C:\Users\Admin\AppData\Local\Temp\is-7D4T6.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/4300-138-0x0000000000400000-0x0000000000427000-memory.dmp

memory/3512-139-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 71f25f23a8f8004fc0ad8b744eaed10d
SHA1 e6bbab1f671f7a8d6fbbe5eaf48681e349367611
SHA256 ec15ad327570e4fbe7871075765a25f9afff36d8763f2e4bd4c894c86b31e02b
SHA512 693d8a8a6c37aa07d134af2cd48d4c705b2c22211cea356c57365c503d051fa8eedc41919f82338c92959b94d9da08d16150c5a53a7ed8e9918f9dea07984e4e

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 71f25f23a8f8004fc0ad8b744eaed10d
SHA1 e6bbab1f671f7a8d6fbbe5eaf48681e349367611
SHA256 ec15ad327570e4fbe7871075765a25f9afff36d8763f2e4bd4c894c86b31e02b
SHA512 693d8a8a6c37aa07d134af2cd48d4c705b2c22211cea356c57365c503d051fa8eedc41919f82338c92959b94d9da08d16150c5a53a7ed8e9918f9dea07984e4e

memory/3512-142-0x0000000000400000-0x0000000001560000-memory.dmp

memory/3512-143-0x0000000000400000-0x0000000001560000-memory.dmp

memory/3512-144-0x0000000000400000-0x0000000001560000-memory.dmp

memory/448-145-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sCzewsN9TvyCgL.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sCzewsN9TvyCgL.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/3512-148-0x0000000010000000-0x000000001001B000-memory.dmp

memory/3512-152-0x0000000000400000-0x0000000001560000-memory.dmp

memory/4248-153-0x0000000000000000-mapping.dmp

memory/5104-154-0x0000000000000000-mapping.dmp

memory/3512-155-0x0000000000400000-0x0000000001560000-memory.dmp

memory/4300-156-0x0000000000400000-0x0000000000427000-memory.dmp